Dab tsi yog qhov muaj pes tsawg leeg ntawm 304 stainless hlau ntawv?

304 stainless hlau ntawv yog ib hom austenitic stainless hlau uas yog dav siv nyob rau hauv ntau yam kev lag luam daim ntaub ntawv vim nws zoo heev corrosion kuj, lub zog, thiab ductility. Nws yog tsim los ntawm cov ntsiab lus tshwj xeeb uas muab nws cov khoom tshwj xeeb thiab cov yam ntxwv.

 

Cov khoom tseem ceeb

Cov khoom tseem ceeb ntawm 304 stainless hlau ntawv yog hlau, carbon, chromium, thiab npib tsib xee. Hlau yog lub hauv paus ntsiab lus, muab cov hlau nrog nws lub zog thiab ductility. Cov pa roj carbon ntxiv los txhim kho cov hlau hardness thiab durability, tab sis nws yuav tsum muaj nyob rau hauv cov concentrations tsawg heev kom tsis txhob txo cov corrosion kuj.

 

Chromium khoom

Chromium yog qhov tseem ceeb tshaj plaws hauv 304 stainless hlau, vim nws yog lub luag haujlwm rau nws cov corrosion kuj. Chromium tsim ib txheej tiv thaiv oxide ntawm cov hlau thaum raug oxygen, tiv thaiv xeb thiab xeb. Hauv 304 stainless hlau, cov ntsiab lus chromium feem ntau yog nyob ib ncig ntawm 18-20% los ntawm qhov hnyav.

 

Nickel element

Nickel yog lwm yam tseem ceeb ntawm 304 stainless hlau, tam sim no nyob rau hauv ntau ntawm 8-10% los ntawm qhov hnyav. Nickel txhim kho cov hlau ductility thiab toughness, ua rau nws tiv taus ntau dua rau kev tawg thiab tawg. Nws kuj tseem txhim khu kev tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj chloride.

 

Ob peb lwm yam

Ntxiv rau cov ntsiab lus tseem ceeb no, 304 stainless hlau kuj tseem muaj cov khoom me me xws li manganese, silicon, sulfur, phosphorus, thiab nitrogen. Cov ntsiab lus no tau ntxiv los hloov kho cov khoom steel thiab txhim kho nws cov kev ua tau zoo hauv cov ntawv thov tshwj xeeb.

 

Nyob rau hauv cov ntsiab lus, cov muaj pes tsawg leeg ntawm 304 stainless hlau ntawv yog feem ntau raws li hlau, nrog chromium thiab npib tsib xee ua cov ntsiab lus tseem ceeb alloying. Cov ntsiab lus no, nrog rau cov khoom me me ntawm lwm cov ntsiab lus, muab 304 stainless hlau nws zoo heev corrosion kuj, ductility, thiab high-temperature kev ua tau zoo. Qhov kev sib xyaw tshwj xeeb no ua rau 304 stainless hlau ntawv yog cov khoom siv ntau yam tsim nyog rau ntau yam kev siv.